The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 19, 1978
Filed:
Mar. 11, 1977
Applicant:
Inventors:
Roland Hummer, Leoben-Goss, AT;
Wolfgang Thury, Leoben, AT;
Wilfried Westerholt, Leoben, AT;
Gundolf Hollerling, Ottobrunn, DE;
Reinhard Strigl, Munich, DE;
Assignee:
Linde AG, Wiesbaden, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21C / ;
U.S. Cl.
CPC ...
7513 / ; 75 60 ;
Abstract
A process for the treatment of a cast-iron melt with oxygen, e.g. for raising the temperature thereof or otherwise modifying the composition of the melt in which the oxygen is introduced directly into the liquid cast iron at a rate (quantity per unit time) so controlled that there is no smoke development above the melt. The control is effected by feeding oxygen into the melt at progressively increasing rates until incipient smoke formation is observed above the melt and then stepping back the oxygen feed until the smoke evolution ceases.